Means for inking type impressions



my 24, 1934. P, B, WEB 1,967,729

MEANS FOR INKING TYPE IMPRESSIONS Original Filed Nov. 29n 1932 3 Sheets-Sheet l Gttornegs Jul`y424? 1934. P, B. WEIS 1,967,729

MEANSl FOR INKING TYPE IMPRESSIONS @riginal Filed Nov. 29. 1952 3 Sheets-Sheet 2 Jig 4" y 102 Zinnentor @www (Ittornegs July 24, 1934.l P. B. WEIS MEANS FOR INKING' TYPE IMPRESSIONS 5 Sheets-Sheet 5 lOriginal Filed Nov. 29, ll932 l wwlIlH HIMWH/.flf l.

Gttorneg aten'ted July 24, 1934 UNITED s'rlvrlazsl MEANS FOR INKIING TYPE MRESSIONS' Paul B. weianumra, 111., assigor to L. c. ,smith & Corona Typewrters, Inc., New York, N. Y., a corporation of New York Application November 29, 1932, serial No. 644,7714

Renewed March 14, 1934 3s Claims. (01197-171) l@ provide an inking means including an impression-inking ribbon wherein the ink supply of the said ribbon may be uniformly andautomatically maintained until the ribbon fabric is worn out; to provide simple and eiicient means 1H for constantly replenishing the minute quantity of ink removed from the impression-inking ribbon as it is reeled from spool to spool during printing; to provide means for carrying to the impression-hiking ribbon only the minute 2@ quantity of ink necessary" to maintain uniformity of strength of the type impressions; and to provide an improved typewriting machine capable of use for long periods of time without changing the impression-inking ribbon and wherein the -inking means may be readily renewed when the impression-inking .ribbonA becomes worn out.

Other vimportant objects of the invention are to provide simple and efficient means for pump- 31D ing or elevating pigment ink (i.e. ink having vparticles of coloring pigment in suspension as distinguished from ink having coloring matter in solution and commonly knownr as dye ink), which is usually a heavy or Viscous ink, from a reservoir and applying the same to a traveling.'

ribbon in small regulated quantity per unit of Q length of the ribbon without injurious wear and stress on the ribbon; to provide efficient means for maintaining a uniform supply of 4o pigment ink in the printing ribbon of a printing machine without subjecting said ribbon to wear by the ink-applyingk or..reinking means; and to provide an eicient ribbon-operated pigmentink-pumping means for lifting pigment ink in minute quantities from a supply and depositing it in -mnute quantities on the pump-driving ribbon.f

Other objects and advantages of the invention will appear from the following description 5o of the illustrated embodiments thereof in a well known form of typewriting machine disclosed in the accompanying drawings.

In the drawings, Fig. 1 is a fragmentary'plan View of the machine equipped with one form of the improved inking mechanism;

Fig. 2.is a front elevation of the parts shown in Fig. 1; f

Fig. 3 is a central longitudinal sectional View of the machine illustrated in Fig. 1 showing so Y much thereof as is necessary for a full understanding -of the present invention;

Fig. 4 is a View partly in vertical section on the line 4-4 of Fig. 6;

Fig. 5 is a-.detail Ahorizontal sectional view on the line 5 5 of Fig. 4;

Fig. 6 is a detail plan View showing part of the inking mechanism of the machine disclosed in the preceding views;

Fig. 7 is a perspective kview showing part of the guiding means for the ink-conveying ribbon and also showing how the ink-applying wheel deposits ink on said ribbon for conveyance thereby to the impression-inking ribbon;

Fig. 8 is a vertical sectional vieW on the line 8--8 of Fig. l showing the start of the ribbon 75 reversing operation when the impression-inking ribbon is completely or susbtantially completely unwound from the left-.hand ribbon spool;

Fig. 9 is a perspective view showing the arrangement of the two ribbons relatively toY each other, and also showing how the two ribbons are connected to each other and to the ribbon spools of the machine;

Fig. 10 is a View similar to Fig. 6 showing a modified form of the machine;

Fig. 11 is aview partly in vertical section on the line 11,-11 of Fig. 10; l

Fig. 12 is a horizontal sectional view on the line 12-12 of Fig. 11; and

Fig; 13 is a fragmentary front elevation of the 90 modified inking means shown in Figs. 10, 11 and 12. j

The ribbon feeding, reversing -and vibrating mechanism foi` the impression-hiking ribbon 49 are all susbtantially the sameI as in the well 95 known L. C. Smith typewriter and as shown in patents to Carl Gabrielson No. 929,933 granted August 3, 1909 and No. 958,388 granted May 17, 1910, -f and therefore need be' only brieiy described.` Each ribbon spool 10 has a hub 11 100 mounted on a driven shaft 12 and clutched tov` the shaft at 13. AEach shaft 12 has a beveled.

gear 14 fixed on its lower'end.

The platen carriage driving spring drum 15, connected to platen carriage 16 by the usual 105 draw band 17, is journalled on stud 18 and car- ,g ries a spring-pressed pawl 19 which drives a ratchet wheel 28 during letter feed travel of -the carriagefrom right to left. Ratchet 20 and pinion 2,1 are fixed on a sleeve 22 which turns no on stud 18. Pinion 21drives pinion 48 and a coaxial Worm gear 28. Worm 28 drives a wormgear 23 fixed on a transverse shaft 24. Two bevel gears 25 (one of which is shown in Fig. 3) are fixed on shaft 24 and respectively mesh with bevel gears 26. There is one of these gears 26 fixed on the rear end of each of the two-part drive shafts 27. The two parts of .each shaft 27 have the usual exible joint 27S. The forward section of each shaft 27 has xed thereon a ribbon reversing pinion 29 and a spool-shaftdriving bevel gear 30.

Two bell-crank levers 31 have their pendent arms connected by a link 32, and each has a laterally extending arm in which is journalled the front end of the forward section of a' different one of the shafts 27 to oppositely tilt said sections to engage one gear 30 at a time with its companion bevel gear 14 on the adjacent spool shaft. One bell-crank 31 has two notches in its pendent arm connected by a cam surface coactive with a roller on a spring detent arm 33 on the machine frame to snap the pendent bellcrank arm laterally to engage either notch with the detent roller to hold one set of gears 14-30 at a time in mesh. The direction of ribbon feed is reversed upon exhaustion of the impression-inking or printing ribbon 49 from either spool, by the unwinding of the impressioninking ribbon uncovering an aperture 34 in the tubular core or barrel 35 of the spool, permitting rocker 36 associated with that spool to rock (as shown in Fig. 8, wherein the ribbon is indicated as exhausted from the left-hand spool) until its hooked lower end engages in the teeth of the adjacent reversing pinion 29. Continued turning of the engaged pinion 29 lifts the front section of the dirve shaft upon which said pinion is mounted and rocks the interconnected bellcranks far enough-for the spring detent 33 and coactiva cam surface to complete the demeshing of the gears 14--30 for the lled spool and complete the meshing of the gears 14-30 for vthe empty spool. The impression-hiking ribbon is threaded through the usual ribbon guide 37 which is slid up and down on type guide 38 to carry the ribbon over the printing point and retract it below the printing point at the key strokes. Guide 37 is vibrated by lever 39 which is connected by linkage 40 to arm 41 of a rocking frame 42 supporting the universal bar 43 whichV is actuated by sub-levers 44. Each sub-lever 44 is connected to one of the type key levers 45 of the machine and is also connected by a link 46 to one of the type bars 47 of the machine forv actuating the type bar to printing position.

The improved machine, in the embodiments of the present invention shown in the drawings, is provided with an ink-conveying or non-writing ribbon in addition to the usual writing or printing ribbon, which twoy ribbons are connected to each other and to the two ribbon 'spools 10 for interwinding of the ribbons upon one spool as they are unwound from the other spool. The Writing, or impression-inking, ribbon 49 is as usual formed of absorptive fabric, preferably thin silk, and is impregnated with ink as usual prior to introduction into the machine. Preferably ribbon 49 is inked with pigment ink, i. e. ink wherein the coloring pigment is heldin suspension in a vehicle. The auxiliary non-writing orink-conveying ribbon 50 is formed of any suitable fabric or material which is non-absorptive of The material of which this nonabsorptive or ink-proof ribbon 50 is made is also preferably as thin as possible, so that connected ribbons of maximum length may be accommodated on the'ribbon spools. The ribbon 50 is preferably impervious by ink, as well as non-absorptive of ink.

The two ribbons 49 and 50 are preferably permanently attached to each other at the factory after inking of the ribbon 49. Preferably the uninked ribbon 50 is permanently secured at each end to the inked ribbon 49 near the two ends of ribbon 49; is only half, or less than half, the width of ribbon 49; and is secured to ribbon 49 at one face of ribbon 49 adjacent one longitudinal edge of the latter ribbon by eyelets 5l, or other fastening means, so as to interwind with one longitudinal half portion of ribbon 49 as shown. The twolattached ribbons thus produced for use are interwound upon a ribbon spool 10 by attaching one end of ribbon 49 to the usual spool core prong 52 or Vother suitable anchorage on the spool core or barrel 35, preferably with ribbon 50 facing the spool core and nearest the top of the spool as shown, and reeling the connected inked and uninked ribbons on the spool. This product for use in the inking of type impressions may be introduced in the machine by mounting the reeled spool l0 upon one of the spool shafts 12; threading ribbon 49 in the ribbon guide and attaching its free end to core prong 52 of an empty spool 10 mounted on the other spool shaft in the same manner and arranged as described for the reeled spool; and threading the uninked ribbon 50 through suitable guides and other parts of a novel inksupplying or` ribbon-inking means hereinafter described for the conveyor ribbon 50.

YThe main frame of the typewriting machine shown includes a top plate 53 having a substantially rectangular aperture 54 between the ribbon spools and forward of the platen, through which aperture the type bars 47 strike to the usual common printing point on the platen 55. Top plateY 53 has a depending outer edge ange 56, and each spool 10 is housed in a cup or housing formed by a circular depression 57 in plate 53 and an annular upstanding ange 58 integral with said plate and extending around the lip of the circular depression. Each cup 57-58 is provided adjacent its rear with a vertical slot 59, through which slot, and a suitable ribbon guide 60 fastened to the cup, the ribbon 49 passes. The upstanding ange portion 58 of each cup is provided adjacent the front of the cup with a vertical slot 61 through which the ribbon 50 passes. The front transverse portion of top plate 53 is cut away midway its ends from its rear edge nearly toits front edge to form a medial bay, cut-outs, or Wide notch 62. An integral upstanding ange 63 on the top plate 53 extends around the front and two end or side edges of this central cut-out or bay 62 and thence outwardly or laterally ofthe machine to a junction with the respective annular spool cup flanges 58 at the outer sides of slots 61.. Said ange 63 extends along the front edge of aperture 54 for a portion of its length at either side of bay 62 and has a slight downward extension 63a along said front edge of aperture 54 to prises two separable sheet metal sections 64 and 65, of substantially J-shape in cross section, y

which are overlapped to form a way or channel of substantially .C-shape in cross section for guiding the ribbon with the medial longitudinal portion of the ribbon exposed through the front open face of the channel. Channel member 64 has two pendent lugs 66 with holes 67 through which one pair of screws 70 pass, arid the inverted .1 -shaped channel member 65 has two pendent lugs 68 with open-end vertical slots 69 for slipping down over the shanks of screws 70. By loosening the two pairs of screws the sections 65 of the channel guideways may be lifted out of the machine for inserting ribbon 50 in or removing it from the two-part guides There is a narrow gap between the adjacent inner ends of the two guideways, which gap is substantially in the central vertical fore and aft plane of the machine through the printing point on the platen, as shown in Fig. 1. The outer ends of the respective guideways extend close to the respective spool cup slots 61, in whichl slots and at the outer ends of the guideways two guide rollers or idle pulleys 71 for ribbon 50 are journalled on upstanding vertical pivot screws 72 screwed into the top plate 53 behind the flange 63.

In one embodiment of the invention shown, an ink reservoir or tank 97, of segmental form in front elevation, has a flat top wall provided at its ends with supporting ea'rs 99, by which ears and a pair of screws the reservoir is detachably `suspended from and beneath the medial part of thef'ront transverse portion of the centrally apertured top plate of the ma chine frame in a position which is above and forward of the type-carrying ends of the usual arcuate system of type bars 47 supported by the usual arcuate' type bar, rest 98. The at horizontally disposed top wall of the reservoir extends across jthe bay or cut-out 62 in the front transverse portion of'topplate 53. In use said reservoir holds a supply of ink 96 corresponding in kind and color with the ink with which ribbon 49 is initially inked. Preferably the ink 96,` as in the ca'se of the initial ink supply with which ribbon 49 is impregnated, is pigment ink such as heretofore described. f

Journalled on a xed vertical pivot 73 up,- standing from the top Wall of reservoir 97 is a ribbon-driven pulley 79 located forward of the gap between the inner ends of the pair of two-part guideways 64-65 for the ribbon50. Pulley 79 is thus positioned substantially midway the portion of ribbon 50 which extends from one ribbon spool to the other ribbon spool.

Slightly to the rear of pulley 79 two small transversely spaced but closely juxtaposed idle guide pulleys 77 for ribbon 50 ,are journalled on fixed vertical pivots 78 upstanding from the -top wall of the ink reservoir. Ribbon 50 has a 'horseshoe bend therein, passing around the front and sides of pulley 79 and between pulleys 77 into the two channel guideways leading to the respective spools. This arrangement of ribbon and pulleys insures a good tractive driving grip of ribbon 50 on pulley 79 without crossing said ribbon and without putting heavy pressure on the said ribbon or putting destructive-strain upon the ribbon and the ribbon feeding mechanism of the machine.

An endwisely and laterally adjustable arm 82 extends horizontally transversely of the ma.-

chine forward of the lower end of the hub of pulley 79 and is immovably clamped in adjusted position to the top wall of the ink reservoir by a clamping screw 74 and preferably 'a washer 75, the shank of said screw extending loosely down through a hole 76 in the left-hand end of said arm and being threaded into the top wall of the ink reservoir. At its right-hand end, slightly forward and to the right of the pulley 79, said arm 82 carries an ink-applying or inktransfer disk wheel 85 journalled on a vertical pivot 84 upstanding from the arm 82. Where a ribbon is to be supplied with pigment ink, and preferably in all cases, wheel 85 is formed of non-absorptive metal or other material nonabsorptive of the ink.

A pinion 81 fixed on the upper end of the hub of pulley .'79 meshes with a pinion 86 fixed on the upper end of the hub of wheel 85 for vdriving said wheel. Disk wheel 85 has a thin pe- 95 riphery beveled downward and outward substantially to a dull knife edge and this periphery of the wheel may be provided with notches 92 to further reduce the amount of ink the wheel will transfer to ribbon 50. The periphery of m0 wheel 85 is at the level of the longitudinal medial line of ribbon l50, and arm 82 is adjusted so that the periphery of said wheel turns in light contact with one face of ribbon 50 (that face which is directed toward the from of the machine between the ribbon spools and contacts the ink discharge face of ribbon 49 in the coils of the latter ribbon on the spoolsl'. Said disk is thus constructed to take up by means of its periphery, and to hold at its periphery for deposit on ribbon 50, a very minute quantity of ink at each revolution of the wheel, said wheel transferring ink from ink-elevating means here-7 inafter described to ribbon 50.

For elevating ink 96 from the reservoir 97 to 115 the periphery of transfer wheel 85,- non-absorptive ink-lifting means are preferably provided. The ink-lifting means in the embodiment of the invention disclosed in Figs 1 to 9 inclusive is a non-absorptive ink-lifting means. Said 120 lifting means comprises a pair of twin vertically extending rollers 90 and 91 preferably formed of brass, steel or other suitable metal or material which will not absorb the ink 96. Said rollers 90 and 91 have fixed on their upper 125 ends meshing pinions 88 and 89. Pinion 88 meshes withpinion 86 on the hub of the ink transfer wheel 85, so that the ink-lifting rollers 90 and 91`as well as the ink transfer wheel 85 are driven positively from the ribbon-driven 130 pulley 79.

Rollers`90 and 91 are closely juxtaposed and are journalled at their upper and lower ends in twin vertical cylinders 93 and 94 which are in open communication with each other from 335 top to bottom thereof at the bight between the rollers through a vertical slot 87. A horizon tal passage or bore 80 connects the twin cylindersat their lower -ends with the ink-holding chamber ofpinkreservoir 97 at a point adjacent R40 l the bottom or lowest part of the chamber. Arm 82 is adjusted so that ink-transfer wheel 85 turns in light peripheral contact with roller 90 'adjacent the upperend of said roller, cylinder 93 being provided with a slot 834 adjacent its 1.45

'upper end to permit said wheel V85 and roller extend above the maximum ink level' in the reservoir and up to the level of wheel85. Preferably the twin cylinders for these rollers are formed by thickening a portion of the front wall of the reservoir, extending this thickened portion above the top wall of said reservoir, and forming two intersecting vertical bores in this thickened portion of the reservoir wall. The upper ends of the bores'my be closed by tight tting bushings 101 and 102 in which reduced upper end portions of the rollers are journalled, and the lower ends of the rollers may be journalled in the bores as shown, or in any other suitable manner, vfor rotation of the rollers about vertical axes.

A filling spout 95 screwed in the top wall of the reservoir, and having a bleeder passage or air vent 103 therein, projects up into the bay 62 in the top plate, as do also the upper ends of the twin cylinders and the ink-lifting rollers in said cylinders. A flat sheet metal cover plate 104, flanged around its outer edge, covers the spool cups and the guiding and inking means for ribbon 50, said plate extending over the spool cups and also over bay 62 and over that portion of ribbon which lies between the ribbon spools, and being detachably held to the top of flange 63 of the top plate 53 of the machine frame by screws 105. Idle pulleys '17v are each provided with an `annular groove 106 at the level of the ink pick-up and deposit edge of disk wheel 85. The adjustable arm 82 is useful to facilitate threading of ribbon` 50 through the inking means as well as for adjusting wheel 85 into light peripheral contactY with ribbon 50 and roller 90.

f In operation of the machine constructed as shown in Figs. 1 to 9 and above described, ink is forced by the types from the Writing or printingribbon 49 at the printing point on platen midway between the ribbon spools 10 on the printing strokes of the type-bars 47. In Figs. 1 to 7 the two ribbons 49 and 50 are shown being reeled upon the left-hand ribbon spool of the machine and unreeled from" the right-hand spool as the printing progresses, so that the used portion of ribbon 49 is beingy interwound face to face on the left-hand spool with a portion of ribbon 50 advancing from the ink transfer wheelv 85. The feed of ribbon 50 rotates pulley 79 and causes said pulley to rotate wheel 85 and rollers 90 and 91 through the gear train 81, 86, 88 and 89. Ink 96 in reservoir 97 normally also iills passage and rises by capillary attraction part way up around rollers 90 and 91 inthe cylinders 93 and 94 and in the vertivcal communication slot 87 between the cylin-A ders. Rotation of the rollers from ribbon y50 and the ribbon feed mechanism while the machine is in use causes a thin lm of ink to climb up to the upper ends of the rollers, the rollers coacting with each other and with their cylinders to cause they ink film to rise and being aided in their lifting action by the lifting effeet due to viscosity of the ink and the capillary attraction between the rollers and ink.

notches 92 in said wheel 85 or omitting said notches. In the drawings a narrow broken line 96a of ink film is shown being deposited on ribbon 50.

The point of deposit of lifted inl; upon ribbon 50 is also midway or substantially midway between the ribbon spools at such a point that in reeling the ribbons first on one spool and then the other 'all used portions of ribbon 49 will be re-inked by ribbon 50 with ink 96 conveyed from reservoir 97. The open faces 'of the two channel guideways6i65 and the grooves 106 in the twoidle pulleys 77 provide clearances for the line of ink 96 deposited on ribbon 50 so that this ink will not be :rubbedV oi as it is being conveyed to ribbon 49.v`

The ribbons are preferably reeled and interwound as shown so that the ink-conveying face of ribbon 50 meets the ink-discharge or printing face of ribbon 49 to each reeling-up coil of which it carries a definite minute and measured quantity of ink per unit of length of the connected ribbons. Each reeled-up coil of ribbon 49 is isolated from the adjacent coils by the coils of the non-absorptive or ink-proof ribbon 50.

particular unit of length of used portion ofy ribbon 49.

The ribbon-driven means of the kind described for. depositing ink on ribbon 50is also capable of use to deposit ink directly on the printing ribbon of a printing machine and of being driven by such a directly re-inked printing ribbon without subjecting the latter to injurious wear and strain.

A modified construction of the means for supplying ribbon 50 of the machine with ink is shown in Figs. 10 to 13 inclusive. The modiiications in structure comprise principally slight 4changes in the pulley 79 and the twin ink-lifting rollers, and the omission of the twin cylinders 93 and 94. Ink reservoir 97a is held to top plate 53 by the same means as reservoir 97, but its top Wall comprises two plate-like elements of which the lower has an aperture 108 therein covered by the-inverted cup-shaped raised portion 97 of the upper element 97b of the top wall. Element 97b is welded or otherwise secured face to face tothe underlying element of the top wall of resryoir 97B. A slot 83 corresponding to slot 83 is provided in cup-shaped portion 97c for receiving ink transfer wheel/ whose periphery turns in light contact with the periphery of roller 908 of the set of twin ink-lifting rollers' a and 91a. Pulley 79 has a sleeve 79a of cork or other friction gripping material iixed thereon for contact with ribbon 50. Wheel 85 and rollers 90a and 91a are driven from pulley 79 by the gear train 81, 86, 88 and 89, as in the construction first described, to lift ink 96 from the reservoir and deposit ink thus lifted upon ribbon 50. Metal rollers 90a and 91a are provided with sleeves or outer surfacings 90h and 91n of a nonabsorptive ink-proof material, such as hard vulcanized ber fixed thereon to rotate therewith. Adjacent their upper ends these rollers are journalled in the top wall of cup-shapedportion 97c of the reservoir, and said rollers extend down through hole 108 into the ink-holding chamber l5@ ofthe reservoir and are journalled at their lower ends adjacent the bottom of the chamber on bearings 109 carried by the bottom wall of the reservoir. The lower portions of the' rollers thus turn freely in the body of ink 96 held in the reservoir and extend above said body of ink to the level of wheel 85, which wheel turns in peripheral 'contact with roller 90a as above described. Capillary attraction and ink viscosity plus the relative' rotary motion of the rollers, causes a thin lm of ink to climb up to the upper ends ofthe rollers during operation of the machine for transfer of lifted ink in minute quantity by wheel to ribbon 50. Wipers 107 of felt or other suitable material may be set in apertures in reservoir portion 97c or be otherwise supported on the reservoir to wipe lightly on the periphery of roller ?--90b at the level of the periphery of disk 85 to reduce the amount of ink said disk 85 will pick up per revolution from the said roller. Rollers 90a and 91 may be supported to turn in light lcontact or be variably slightly -spaced for varying the amount of ink lifted thereby per revolution. Ink 96 in reser-v pvoir 97 normally climbs partly up around each roller and between the rollers somewhat as shown in Fig. 11 as a result of capillary attraction between the ink and the non-absorptivel Qing the ribbon feeding mechanism to undue strain. The gear tra-in 81, 86, 88 and 89 insures uniform and regulated drive of the ink lifting means and the means for depositing lifted ink on ribbon 50 and, together with the mounting for disk 85, makes possible the use of the knifeedge inker disk 85 without injurious pressure.

of said disk on ribbon'50 and roller 90 or roller 98a, and insures uniform and regular stepby-step rotation of disk 85. It is thus possible to obtain uniform impressions over much longer periods than usual from. a printing ribbon, and it is also possibleto use a very thin printing ribbon having a light initial impregnated ink supply,.which light supply is kept constant for good .clean-cut impressions 4throughout very long periods ofv use. It is possible also to use the printing ribbonuntil the ribbon fabric becomes Worn through by the type impacts.

The narrow ribbon 50 permits the construction of a lighter fandmore compact re-inking means, and when arranged as described permits deposit of ink upon ribbon 49 above a mean line through that portion of the ribbon from which the greatest quantity of ink is normally driven 'by the types, for more uniform absorption of the It will [be observed that ink from the reservoir is lifted and deposited in minute quantity upon ribbon 50 during feeding of the latter ribbon; and thatA this ribbon 50 and the means for lifting andv vdepositing ink thereon are all nonabsorptiveof ink. Means are thus not only providedfor re-inking a printing ribbon with only the required very` minute quantity of ink at a time, but for so re-inking such a ribbon with pigment ink without straining out from the ink vemon vehicles for the pigment in inks of the pigment type are heavy oily material or viscous varnish-like material. Inks of this type are highly desirable for use in printing machines, such as typewriting and calculating machines, because of the good clean-cut impressions which may be attained if the supply is properly regulated and maintained. The present invention provides simple and efficient means whereby a properly regulated supply of such ink for type expulsion from a printing ribbon may be uniformly maintained for very long periods of time andl throughout the life of the material of which the printing ribbon is formed.

What I claim is:

1. Inl a printing machine, the combination of printing mechanism; a printing ribbon; a nonabsorptive ink-conveying ribbon; a pair of ribbon spools; mechanism for interwinding said ribbons upon vone spool from'the other spool and for reversing the direction of winding of the ribbons when the latter spool becomes emp- `ty; guiding means for the ribbons for directing only the printing ribbon over the printing point as the ribbons are Wound from spool to spool, of an ink reservoir on said machine; a pulley engaged and driven by the ink-conveying ribbon; `an ink-applying wheel having a substantially knife-edge periphery; means for rotatively supporting said wheel to turnon an axis extending crosswise of the ink-conveying `v ribbon with the periphery of said wheel contacting the ink-conveying ribbon at a point where said ribbon is backed by said pulley; driving means connecting the wheel and pulley for driving the Wheel from the pulley; means,

comprising a non-absorptive roller associated with said reservoir' for turning of one end portion thereof in an ink supply in the reservoir, for lifting ink from said reservoir and depositing a, ilm of said ink upon the periphery of said wheel, said roller having its periphery contacted by the periphery of said wheel abovethat portion of the roller which turns in the ihk supply; and driving means connecting said wheel and roller for rotating the roller.

2. In a printing machine, the combination of printing mechanism; a printing ribbon; a non- 1absorptive ribbon for conveying ink to the printing ribbon; a pair of ribbon spools; mechanism for interwinding 2said ribbons upon one spool yfrom the other spool and for reversing the direction of Winding of the ribbons when the latter spool becomes empty; guiding means for the ribbons directing only. the printing ribbon over the printing point as the ribbons are wound from spool to spool; a pulley engaged and driven by the` ink-conveyingl ribbon and supported on a fixed-vertical axis; a pair of closely juxtaposed idle pulleys supported on xed vertical axes at one side of the driven pulley between which the ink-conveying ribbon passes in opposite directions to and from the driven pulley in paths more closely spaced than the diameter ofthe driven pulley; yan `ink reservoir; a non-absorptive roller supported to rotate on a verticaLaXis and to extend at its lower end only into` ink supply in said reservoir; an ink-applying disk rotatively .supported on a vertical axisv t and contacting with its periphery the periphery of said roller and also contacting the ink-conveying ribbon at a point where said ribbon is backed by the driven pulley; means'connecting said roller and disk and driven pulley for rotatively driving the disk and roller from said pulley; and means coactive with said rotatively driven roller during operation of the machine to cause a iilm of ink from a supply in said reservoir to rise to that portion of the periphery of said roller which is contactive with said disk.

3. In a printing machine, the combination of a printing ribbon impregnated with ink; a nonabsorptive ribbon; ribbon feeding mechanism including a pair of ribbon spools upon first one and then the other of 'which the ribbons are interwound; printing means coactive with the printing ribbon to form inked impressions; guiding means for the non-absorptive ribbon withholding the same from the eld of printing action of the printing means; a pulley supported on a fixed axis and engaged and driven by said nonabsorptive ribbon at apoint substantially mid- Way between said ribbon spools; an ink-applying disk supported to rotate about an axis parallel to the pulley axisy with the periphery of said disk contacting with one face of 'said non-absorptive ribbon at a point where the opposite face of the ribbon is contactivewith said pulley; a non-absorptive roller supported to rotate about an axis parallel to those of said pulley and disk' with the periphery of said roller contactive adjacent its upper end with said disk; means for rotatively driving said disk and roller from said ribbon-driven pulley; an ink reservoir for holding a supply of ink aboutthe lower end of said roller; a second non-absorptive roller closely juxtaposed to the rst roller` and supported to rotate about a vertical axis and extending along the i'lrst roller substantially from end to end of the rst roller; and means for rotatively driving the second roller from the iirst roller.

4. In a printing machine,` the combination of a printing ribbon absorptive of ink; a non-absorptive ribbon for conveying ink to said printing ribbon; means, including a pair of ribbon spools, for interwinding the ribbons and reversing the direction of winding of the ribbons; printing mechanism coactive solely vwith the printing ribbon to form inked impressions; a pulley around the major portion of whose periphery said ink-conveying ribbon is bent substantially midway between the ribbon spools to drive said pulley; an ink-applying wheel Whose axis extends widthwise of the ribbon; means rotatively the ink-conveying ribbon where the latter is Y bent around and backed by said pulley; driving means for rotatively driving the Vink-applying Wheel from said pulley to cause the wheel to deposit ink upon the ink-conveying ribbon as the ribbons are reeled from spool to spool; an ink reservoir below the level of said wheel; and means rotatively driven from said pulley for lifting ink from said'reservoir and applying a" illrnk of said ink to theperiphery of said wheel, said last-mentioned means comprising a companion pair of non-absorptive rollers extending upward from a-point Within said reservoir.

adjacent the bottom of the reservoir, one of which rollers turns inY peripheral contact With said Wheel adjacent the upper ends of the rollers.

5. In a printing machine, Lthe combination of Atwo ribbons; means, vincluding a pair of ribbon ink reservoir below the level of said pulley; an'

ink pump driven from said pulley and having f ribbon at a point where the latter is backed by said pulley to transfer ink from said rotor to said ribbon. v

6. In a printing machine, the combination of a printing ribbon; a non-printing ribbon; means, including a pair of ribbon spools, for interwinding said ribbons face to face and reversing the direction of Winding of the ribbons; i printing means coactive solely with the printing' ribbon during formation of impressions as the ribbons are wound from spool to spool; a pulley engaged by the non-printing ribbonr substantially midway between the spools and qrotated about a vertical axis by said ribbon; a non-absorptive ink-applying disk supported for turning about a vertical axis in peripheral contact with said non-printing ribbon at said pulleyand through the bight of which disk and the pulley said non-printingribbon passes; an ink reser- 'voir below the level of said disk; a closely juxtaposed pair of non-absorbent rollers extending upwardly from within said reservoir to the level of said disk and supported to turn on vertical axes with one of said rollers and said disk. in Y peripheral contact; and means connecting said pulley to said disk and rollers for rotatively driving the disk and rollers from said pulley.

7. In a visible-Writing typewriting `machine, the combination of a machine frame; a platen; type bars movable to the platen to print; an inkabsorptive printingl ribbon;l a non-absorptive ribbon for conveying ink to the printing ribbon; ribbon feeding and vibrating mechanism for interwinding the two ribbons rst at one side and then the other of the printing point and interposing thev printing ribbon over the printing point during the making ofv type impressions; guiding means for maintaining the non-absorptive ribbon disposed verticalhf edgewise and outside the paths of movement of the type bars; a non-absorptive ink-applying wheel supported on a vertical axision the machine frame to rotate in peripheral contact with one face of said non-absorptive ribbonat a point which is substantially midway between the two points atv which the ribbons are interwound and is approximately in front of the printing point; a pulley directly rotatively driven about a vertical axis by said non-absorptive ribbon and between which and said wheel the said ribbon passes; anA ink reservoir carried by the machine frame below the level of said pulley; an ink lm lifting pump driven from said pulley and having an ink film lifting non-absorptive rotor extending upward from within said reservoir to the level of said pulley `and supported to turn on a vertical axis; and a non-absorptive ink-delivery disk driven from said pulley and supported to rotate on a vertical axis with its periphery contacting said rotor and also Ycontacting said nonabsorptive ribbon.-.

8. In a vfront-strike typewriting machine having a main frame, a writing ribbon, and a pair of ribbon spools which turn upon upright axes at opposite sides of the machine during operation of the machine to feed the ribbon past the printing point, the combination with said frame, Writing ribbon and ribbon spools of means for inking the writing ribbon comprising a exible ink conveyor connected to interwind with said ribbon as it is reeled upon each of the spools; means for guiding the iiexible ink conveyor vertically edgewisefrom one spool to the other above the paths of movement of the type bars; an ink reservoir below the path of travel of said conveyor and supported on the machine frame; and non-absorptive rotary devices supported on the machine frame to turn on vertical axes for lifting ink v from said reservoir and depositing it on said conveyor at a point substantially midway between the ribbon spools during operation of the machine.

9. A ribbon inking device comprising a ribbondriven pulley adapted to be driven by traction of a ribbon to be inked; a pair of closely juxtaposed idle pulleys adjacent the driven pulley for directing the ribbon to be inked in a horseshoe bend around said driven pulley; an inkapplying disk geared to said driven pulley and supported to peripherally engage a ribbon driving and backed by said pulley; a reservoir for holding a body of ink below the level of said disk; a non-absorptive roller geared to said disk and peripherally contacting the same ad' jacent one end of the roller and having its other end in the reservoir to turn in a body of ink confined in the reservoir; and means coactive with said non-absorptive roller for causing a film of ink to advance over the periphery of the roller to said disk when the roller is rotated.

10. A ribbon inking device comprising an ink reservoir; a pulley supported above the reservoir engaged face of the pulley-driving ribbon.

11. A ribbon inking device comprising a pair of closely juxtaposed ink-lifting rollers 'supported on vertical axes; van ink reservoir for maintaining a supply of ink in communicationl with the lower ends of said rollers with the upper ends of the rollers above the level 'of said supply of ink; a rotary ink-transfer device supported on a vertical axis to turn in peripheral contact with one of said ink-lifting rollers ad-" jacent the upper end of said roller for transferring ink from said end of said roller to one face of a ribbon fed past said ,transfer device in contact with the periphery. of the transferdevice.

12. A ribbon inking device comprising a pair of closely juxtaposed ink-lifting rollers supported lon vertical axes;' an ink reservoir for maintaining a supply of ink in communication with the lower ends of said rollers with the upper ends of the rollers above the level of said supply of ink; a rotary ink-transfer device supportedon a vertical axis to peripherally contact one of said ink-lifting rollers only adjacent the upper end of the rollers;l a pulley supported opwith the lower ends of said rollers with the upf per ends of the rollers above the level of said supply of ink; a rotary ink-transfer device supported on a vertical `axis to peripherally contact one of said ink-lifting rollers only adjacent the upper end of the roller; a pulley supported opposite said transfer device on a vertical axis for driving by a ribbon to be inked and to back said ribbon at a point where said transfer device is supported to peripherally contact said ribbon; and driving gearing connecting the pulley and rollers and transfer device; said gearing and pulley and rollers and transfer device all being supported by\the reservoir.

14. In a printing machine, the combination of impression forming means, an impression inking traveling ribbon fed for expulsion of ink therefrom by impression forming operations of the impression forming means, a traveling non-absorptlve ribbon fed to contact one face thereof with one face of the impression inking ribbon and constantly withheld from the eld of action of the impression forming means, an inkreservoir below the path of travel of said non-absorptive ribbon, a rotary ink applier which is nonabsorptive of ink and is supported above the level of said reservoir to turn in peripheral contact with said impression inking ribbon con-A tacting face of the non-absorptive ribbon and about an axis extending transversely of the said ribbon face, and non-absorptive means for automatically feeding a'lm of ink upward from said reservoir to the periphery of said rotary ink applier. Y

l5. In a printing machine, the combination of impression forming means, an impression inking traveling ribbon fed for expulsion of ink therefrom by impression forming operat'ons of the impression forming means, a traveling non-absorptive ribbon fed to contact one face thereof with one face of the impression inking ribbon and constantly withheld from 'the field of action of the -impression form'ng means, an ink reservoir below the path of travel of said non-absorptive ribbon, and non-'absorptive means for conveying ink`from said reservoir to said impression inking ribbon contacting face of the non-absorptive ribbon for conveyance by the latter ribbon to the impression inking ribbon.

16. In a printingmachine, the combination of impression forming means, an impression inking traveling ribbon fed for expulsion of ink there- `from by impression forming ofperations of the impression/forming means, a traveling non-absorptive ribbon fed to contact one face thereof with one face of the impression inking ribbon and conimpression forming means, an impression inking traveling ribbon fed for expulsion ofv ink therefrom by impression forming operations of the impression forming means, a traveling nonabsorptive ribbon fed to contact one face thereof with one face of the impression inking ribbon and constantly withheld. from thev field of action of the impression forming means, an ink reservoir below the path of travel of said non-absorptive ribbon, an upstanding non-absorptive inklifting rotor extendingdown into said reservoir and. rotatively driven from the non-absorptive ribbon during travel of said ribbon, means whereby rotation of said rotor causes a film of ink to rise from the reservoir on the periphery of the rotor, and non-absorptive ink transfer means for transferring ink from said lm on the periphery of said rotor to the impression inking ribbon contacting face of the non-absorptive ribbon for conveyance of the transferred ink by the non-absorptive ribbon to the impression inking ribbon. i

18. In a printing machine, the combination of impression forming means, an impression inking traveling ribbon fed for impression inking action thereon of the impression forming means, a traveling non-absorptive ribbon fed to contact one face thereof with a face of the impression inking ribbon and Withheld from action thereon of the impression forming means, an ink reservoir, an lupstanding non-absorptive rotor extending down into said reservoir, a non-absorptive and rotary.

ink transfer device above thel reservoir rotative about an upstanding axis with its periphery contacting that of the rotor and also contacting the said impression inking ribbon contacting face of the non-absorptive ribbon at a point where the ribbons are out of contact, and means whereby rotation of -said rotor causes a film of ink to rise on the periphery of the rotor from an ink supply in the reservoir to said ink transfer device.

19. In a printing machine, the combination of impression forming means, an impression inking traveling ribbon fed ,for impression inking action thereon of the impression forming means, a traveling vnon-absorptive ribbon fed to contact one face thereof with a face of the impression inking ribbon and Withheld from action thereon of the impression forming devices, an ink reservoir, an upstanding non-absorptive rotor extending down into said reservoir, a nonabsorptive and rotary ink transfer device above the reservoir rotative about an upstanding axis with its periphery contacting that of the rotor and also` contacting the said impression inking ribbon contactingk face of the non-absorptive ribbon at a point where the ribbons are out of contact, a pulley rotative about an upstanding.

ing a film of ink to rise from a supply of,` ink in the reservoir to that `rp ortion of the periphery of the rotor which turns in contact with the periphery of the inktransfer device.

20. In a printing machine, the combination- Vof impression forming means, an impression inking traveling ribbon fed for impression inking action thereon of the impression forming means,

17. In a printing machine, the combination of a traveling non-absorptive ribbon fed to contact one face thereof with a face of the impression inking ribbon and withheld from action thereon of the impression forming means, an ink reservoir, a pair of closely juxtaposed non-absorptive rollers extending .down into said reservoir and rotative about upstanding axes, a non-absorptive rotary ink transfer device rotative about an upstanding axis in peripheral contact with one of said rollers and with said impression inking ribbon ycontacting face of the` non-absorptive ribbon, and means for rotat'vely driving said rollers and device" from the non-absorptive ribbon, said means turning the device contacted roller oppositely tothe device and the other roller.

21. In a printing machine, the combination of impression forming means, an impression inking traveling ribbon fed for impression inking action thereon of the impression forming means, a traveling non-absorptive ribbon fed to contact one face thereof with a face of the impression inking ribbon and withheld from action thereonof the impression forming means, an ink reservoir, a pair of closely juxtaposed non-absorptive rollers extending down into said reservoir and rotative about upstanding axes, a non-absorptive rotary ink transfer device rotative about an upstanding axis in peripheral contact with one of said rollers and withsaid impression inking ribbon contacting face of the non-absorptive ribbon, means for rotatively driving said rollers and device from the non-absorptive ribbon, said means turning the device contacted roller oppositely to the device and the other roller, and

stationary means on the reservoir forming a housing for the juxtaposed rollers in which the rollers are closely confined, said housing being in open communication with the reservoir adjacent its lower end and having a clearance opening adiacent its upper end for said ink transfer device.

22. In a typewriting machine, ythe combination of a platen, type coactive with the platen at a common printing point, a traveling absorptive ribbon fed back and forth across the printing point for`expulsion of ink therefrom by the type, a. traveling non-absorptive ribbon withheld from crossing the printing point and fed back and forth in accordance with the direction of feed of the absorptive ribbon, a face of said non-absorptive ribbon traveling in contact at opposite sides of the printing point with a face of said absorptive ribbon, an ink reservoir, and non-absorptive means for lifting ink out of said reservoir and applying itf to said face of said non-absorptive ribbon during travel of said ribbon in each direction of feed of said ribbon and 'at a point past which said ribbon travels in passing from one side to the other of the printing point.

23. In a t'ypewriting machine, the combination of a platen, type coactive with the'platen at a common printing point, Va traveling absorptive ribbon fed back and forthacross the printing point for `expulsion of ink therefrom bv the type, a traveling non-absorptive ribbon withheld from crossing the printing point and feci\ back and forth in accordance with the direction of feed of the absorptive ribbon, a face of said.

non-absorptive ribbon traveling in contact at opposite sides of the printing point with a face of Jsaid absorptive ribbon, a non-absorptive rotary ink transfer device rotative about an upstanding axis in peripheral contact with said face of the non-absorptive ribbon at a point in the path of travel of said ribbon from one side to the other of the printing point, an ink reservoir, an upstanding non-absorptive rotor rotative about an upstanding axis in peripheral contact with said device and extending down into said reservoir, and means whereby rotation of said rotor in each direction causes a film of ink from a supply in the reservoir to rise on the rotor to the ink transfer device.

24. In a typewriting machine, the combination of a platen, type coactive with the platen at a common printing point, a traveling absorptive ribbon fed back and forth across the printing point for expulsion of ink .therefrom byr the type, a traveling non-absorptive ribbon withheld from crossing the printing point and fed back and forth in accordance with the direction of feed of the absorptive ribbon, a face of said non-absorptive ribbon traveling inv contact at opposite sides of the printing point with a face of saidfabsorptive ribbon, a non-absorptive rotary'ink transfer devicerotative about an upstanding axis in peripheral contact with said face of the non-absorptive ribbon at a point in the path of travel of said ribbon from one side to the other of the printing point, an ink reservoir, an upstanding non-absorptive rotor rotative about an upstanding axis in peripheral l contact with said device and extending down into said reservoir, means whereby rotation of said rotor in each direction causes a film of ink from a supply in the reservoir to rise on the rotor to the ink transfer device, a pulley rotative by the non-absorptive ribbon about an upstanding axis and peripherally contacting the non-absorptive ribbon and backing the ribbon where it is contacted by the ink transfer device, means causing the non-absorptive ribbon to hug the pulley around the major portion of the circumference of the pulley, and means for rotatively driving said ink transfer device and said rotor from the pulley, said driving means turning said device and rotor in opposite directions about their axes.

25. In a machine having means for forming type impressions, means for inking the type impressions comprising a traveling printing ribbon absorptive of inl; and guided for expulsion of ink therefrom by the impression forming means, a second traveling ribbon non-absorptive of ink and guided/to carry ink to the printing ribbon and to be constantly withheld from the field of impression forming action of the impression forming means, a pulley about 'the major portionof the circumference of which said second ribbon is directed in face contact with the periphery of the pulley, means for reversing the travelof said ribbons simultaneously, said non-absorptive ribbon being guided to pass from said pulley in each direction of travel of said ribbon to contact the printing ribbon with that face of the non-absorptive ribbon opposite the one which engages the pulley, an ink reservoir, a rotary ink applier between the periphery of which and said pulley the non-absorptive ribbon is fed and which applier is non-absorp- V tive of inl; and contacts the non-absorptive ribbon at a point where the latter is backed by the pulley, and non-absorptive means for conveying ink from the reservoir to the periphery of said ink applier.

26. In a printing machine, the combination of means for forming type impressions at a printing point, a, traveling printing ribbon absorptive of ink and guided for expulsion of ink therefrom at the printing point by the impression 'forming means, a second traveling ribbon non-absorptive of ink and guided to carry ink to the printing ribbon at opposite sides of the printing point and to be constantly withheld from the field of impression forming action of the impression forming means, a pulley about the major portion of the circumference of which said second ribbon is directed in face contact with the periphery of the pulley, means for reversing the travel of said ribbons simultaneously, said non-absorptive ribbon being guided to contact the printing ribbon at opposite sides of the printing point with that face of the non-absorptive ribbon opposite the one which engages' the pulley, an ink reservoir, a rotary ink applier between the periphery of which and said pulley" the non-absorptive ribbon is fed and which applier is non-absorptive of ink and contacts vthe non-absorptive ribbon at a point where the latter is backed by the pulley, and non-absorptive means actuated from said pulley to lift ink from the reservoir to the periphery of said ink applier.

27. A ribbon inking device comprising an ink reservoir, an ink lifting non-absorptive roller extending endwise downward into the reservoir, a rotary non-absorptive ink applier at the top of the reservoir supported to turn in peripheral contact with the upper end portion of the roller, a pulley for driving by the ribbon to be inked and supported at the top of the reservoir for feeding of the ribbon between the pulley and ink applier with the ribbon backed by the pulley opposite the point of contact of the ink applier with the ribbon, means for rotatively driving the ink 'applier and roller froml the pulley, said means turning the applier and roller in opposite directions when the pulley turns, and means coactive with said roller to cause a film of ink to advance up the roller to the ink applier in response to rotation of the roller.

28. A ribbon inking device comprising an ink reservoir, an ink lifting non-absorptive roller extending endwise downward into the reservoir, a rotary non-absorptive ink applier at the top of the reservoir supported to turn in peripheral contact with the upper end portion of `the roller, a pulley for driving by the ribbon to be inked and supported at the top of the reservoir for feeding of the ribbon between the pulley and ink applier with the ribbon backed by the pulley opposite the point of contact of the ink applier with the ribbon,.means for rotatively driving the ink applier and roller from the pulley, said means turning the applier and roller in opposite directions when the pulley turns, and means extending along the roller and coactive therewith when the pulley is rotated in either direction to advance a film of ink up the periphery of the roller from an ink supply in the reservoir to the ink applier.

29. A, ribbon inking device, as claimed in claim 27, having means associated with the pulley to `direct the ribbon to be inked to hug the periphery of the pulley around the major portion of the circumference of the pulley.

30. A ribbon inking device comprising an ink reservoir having an ink chamber, a non-absorptive ink-lifting roller supported to rotate about an upstanding axis, an upstanding roller housing in open communication adjacent its lower end with the lower portion of the ink chamber,

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said housing extending along the roller close to the roller periphery, and means adjacent the upper end of said roller and supported for rolling contact therewith for transferring ink from the periphery of the roller to a ribbon.

31. A ribbon inking device comprising a pair of non-absorptive rollers supported to turn in closely juxtaposed ,'relation about upstanding axes, and means for maintaining a supply of inkabout the lower portions of said rollers.

32. A ribbon inking device comprising a pair of non-absorptive rollers supported to turn in closely juxtaposed relation about upstanding axes, a housing for the rollers, means for transferring ink to a ribbon from the periphery of one of said rollers at the upper end of the roller, and means for maintaining a supply of ink in the housing about the lower end portions only of the rollers, the pair of rollers being closely surrounded by they housing substantially from end to end of said pair of rollers. v

33. In a printing machine, the combination of impression forming means, an impression inking ribbon absorptive of ink, an ink reservoir, means for feeding said inking ribbon across an impression forming point for expulsion of ink' from the ribbon by the impression forming means to ink impressions, means for reversing the feed of saidl ribbon, an ink reservoir, and non-absorptive ink pumping and conveying means operable from said feeding means to lift inl?` from said reservoir and deliver it to the ribbon progressively along that portion of the ribbon-which has been fed past the impression forming point as the ribbon is fed in each direction by said feeding means.

34. A printing machine having, in combination, means for forming type impressions at a printing point, a printing ribbon fed back and -forth across the printing point for expulsion of ink therefrom by the impression forming means to'ink the type impressions, a rotary ink applier, an ink conveyor ribbon withheld from the eld of action of the impression forming means and fed back and forth in face contact with the periphery of the ink applier to take ink therefrom during feeding of the printing ribbon in each direction and carry the in k to a face of that portion of the printing ribbon which is being fed away from the printing point, an ink reservoir, an upright non-absorptive rotor extending down into said reservoir and turning in f peripheral contact adjacent its upper end with the periphery of said ink applier, and non-absorptive means coactive with said rotor upon turning of the rotor to cause a film of ink to rise on the periphery 'of the rotor to the ink applier from a supply of ink in the reservoir.

35. A printing machine, as claimed in claimA 34, having a pulley which backs the ink conveyor ribbon where the ribbon engages the ink applier, which pulley is rotatively driven by the ink conveyor ribbon, and means for rotatively driving the ink applier and rotor from the pulley, said driving means turning the applier and rotor in opposite directions.

36. A printing machine, as claimed in claim 34, wherein the ink applier and'rotor are rotatively and oppositely driven from a pulley about which the ink conveyor ribbon is fed to hug the periphery of the pulley around the major portion of the circumference of the pulley.

37. A printing machine having, in combination, means for forming type impressions at a printing point, a printing ribbon fed back and forthacross the printing point for expulsion of 'ink therefrom by the impression forming means to ink the type impressions, a rotary ink applier, an ink conveyor ribbon withheld from the field of action of the impression forming means and fed back and forth in accordance with the direction of feed of the printing ribbon to take ink from the periphery of the ink applier'and carry the ink to the printing ribbon during feeding of the printing ribbon in each direction, an ink reservoir, and a pair of closely juxtaposed upright non-absorptive ink-lifting rollers extending down into said reservoir, one of said rollers contacting with its periphery adjacent its upper end the periphery of the ink applier.

38. A printing machine, as claimed in claim 37, having means driven by the ink conveyor ribbon for rotatively driving the ink applier and rollers, said means turning the rollers oppositely and turning` oppositely the ink applier and the roller which contacts said applier.

PAUL B. WEIS. 

